XML 33 R61.htm IDEA: XBRL DOCUMENT v2.4.0.6
Interest Rate Swap Agreements (Details) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2012
Interest rate swap agreements designated as hedge agreements  
Amount Designated as a Hedge $ 513,983
Nominal amount 525,000
Current Liability 5,849
Long-Term Liability 10,073
Estimated Total Fair Value at Sep 30, 2012 15,922
Interest Rate Swap One Agreements [Member]
  
Interest rate swap agreements designated as hedge agreements  
Amount Designated as a Hedge 63,983
Nominal amount 75,000
Effective Date Nov. 01, 2008
Pay Rate 3.63%
Receive Rate 1-Month LIBOR
Expiration Date Nov. 01, 2012
Current Liability 320
Long-Term Liability   
Estimated Total Fair Value at Sep 30, 2012 320
Interest Rate Swap Two Agreements [Member]
  
Interest rate swap agreements designated as hedge agreements  
Amount Designated as a Hedge 175,000
Nominal amount 175,000
Effective Date Dec. 01, 2010
Pay Rate 1.3975%
Receive Rate 1-Month LIBOR
Expiration Date Sep. 01, 2015
Current Liability 1,968
Long-Term Liability 3,483
Estimated Total Fair Value at Sep 30, 2012 5,451
Interest Rate Swap Three Agreements [Member]
  
Interest rate swap agreements designated as hedge agreements  
Amount Designated as a Hedge 175,000
Nominal amount 175,000
Effective Date Dec. 01, 2010
Pay Rate 1.40%
Receive Rate 1-Month LIBOR
Expiration Date Sep. 01, 2015
Current Liability 1,991
Long-Term Liability 3,534
Estimated Total Fair Value at Sep 30, 2012 5,525
Interest Rate Swap Four Agreements [Member]
  
Interest rate swap agreements designated as hedge agreements  
Amount Designated as a Hedge 100,000
Nominal amount 100,000
Effective Date Nov. 01, 2011
Pay Rate 1.715%
Receive Rate 1-Month LIBOR
Expiration Date Apr. 01, 2016
Current Liability 1,570
Long-Term Liability 3,056
Estimated Total Fair Value at Sep 30, 2012 $ 4,626